Global Patent Index - EP 0770637 B1

EP 0770637 B1 2002-09-11 - Process for making a polyphenylene ether resin molding material for lamp reflectors

Title (en)

Process for making a polyphenylene ether resin molding material for lamp reflectors

Title (de)

Verfahren zur Herstellung einer Polyphenylenetherharz-Formmasse für Lampenreflektoren

Title (fr)

Procédé pour la préparation d'une masse à mouler à la base de polyphénylène éther pour des réflecteurs pour lampes

Publication

EP 0770637 B1 (EN)

Application

EP 96307387 A

Priority

JP 30051095 A

Abstract (en)

[origin: EP0770637A1] A resin composition for lamp reflectors with excellent heat resistance, beam sharpness, and mechanical properties comprises 80-100 percent by weight of polyphenylene ether as the resin component. The composition has a heat deflection temperature of at least 160 DEG C, and the resin component, when dissolved in chloroform, leaves a residue of no more than 0.05 percent by weight when passed through a 325 mesh screen. The molding material can be made by, for example, maintaining the resin component at a temperature of no more than 360 DEG C while melt-kneading it at a specific energy of at least 0.5 kwh/kg.

IPC 1-7 (main, further and additional classification)

C08G 65/40; C08L 71/12

IPC 8 full level (invention and additional information)

F21S 8/10 (2006.01); C08L 71/12 (2006.01); F21V 7/00 (2006.01); F21V 17/00 (2006.01)

CPC (invention and additional information)

C08L 71/123 (2013.01)

Combination set (CPC)

C08L 71/123 + C08L 2666/04

Designated contracting state (EPC)

DE ES FR GB IT NL

DOCDB simple family

EP 0770637 A1 19970502; EP 0770637 B1 20020911; DE 69623560 D1 20021017; DE 69623560 T2 20030515; ES 2182953 T3 20030316; JP H1160935 A 19990305